|Publication number||US5037417 A|
|Application number||US 07/368,399|
|Publication date||Aug 6, 1991|
|Filing date||Dec 17, 1987|
|Priority date||Dec 23, 1986|
|Also published as||EP0338014A1, WO1988004546A1|
|Publication number||07368399, 368399, PCT/1987/611, PCT/SE/1987/000611, PCT/SE/1987/00611, PCT/SE/87/000611, PCT/SE/87/00611, PCT/SE1987/000611, PCT/SE1987/00611, PCT/SE1987000611, PCT/SE198700611, PCT/SE87/000611, PCT/SE87/00611, PCT/SE87000611, PCT/SE8700611, US 5037417 A, US 5037417A, US-A-5037417, US5037417 A, US5037417A|
|Inventors||Maj I. Ternstrom, Roy Hansson|
|Original Assignee||Molnlycke Ab|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (16), Referenced by (74), Classifications (15), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention relates to a sanitary napkin consisting of an absorbent body and a casing surrounding it.
Leakage arising from sanitary napkins or pantiliners are in most cases caused by improper positioning of the napkin already on its application in a panty, or by the absorbent body being at least partially displaced from its initial position.
Sanitary napkins having flaps projecting laterally from the center of the absorbent body, which primarily serve to protect the crotch portion of the panty from discoloration, are previously known. Although preventing to a certain degree lateral displacement of the sanitary napkin in the crotch portion, such flaps do not support the absorbent body at its ends.
The object of the invention is to improve a napkin of this type so as to reduce the risk of leakage associated with sanitary napkins.
This object is achieved with a sanitary napkin according to the invention. By the flaps being located at the front edge of the napkin they will be more readily accessible, enabling them in this manner to be secured to the outside of the panty after putting it on. Also, the inventive napkin is more easily fitted into its proper position since adjustment can be done at the end instead of at the center of the napkin.
In a preferred embodiment of the invention, the side flaps extend in the longitudinal direction of the absorbent body from the end of the napkin intended to be placed in front, and up to at least the center of the absorbent body. Furthermore, the side flaps are made tapering from said front end of the napkin.
The inventive design of the flaps will enable the napkin to be folded into packages prior to as well as subsequent to usage, which is a great advantage from the user's aspect.
These and other features and advantages will be disclosed in more detail in the following description of an embodiment of the inventive sanitary napkin with reference to the accompanying drawings, of which
FIG. 1 shows a sanitary napkin according to the invention with the side intended for attachment inside a panty facing the viewer;
FIG. 2 shows an alternative embodiment of the sanitary napkin according to FIG. 1; and
FIGS. 3a-3d show the various steps of folding the sanitary napkin according to Claim 1 into a package.
The sanitary napkin illustrated by the figures comprises an absorbent body 1 encapsulated in a casing which is composed of two interconnected surface layers 2, 3. The surface layer 2, which is a liquid impermeable layer facing the panty during use of the napkin and therefore constitutes the so-called outside of the casing, is secured at spaced points to the panty as will be explained later on, whereas the surface layer 3 is a liquid permeable layer facing the wearer's body during use and constituting therefor the so-called inside of the casing.
As can be seen from the figures, at least one end of the casing has lateral extensions forming side flaps 4, 5. In FIG. 1 the side flaps extend from one end of the napkin to the other end thereof and are made tapering from the upper end as seen in the figure, which end is to be forwardly placed within a panty for which reason it is referred to in the following as the front end of the napkin. The casing is provided on its outside with adhesive layers 6, 7 located at the forward ends of the side flaps, as well as an adhesive layer 8 disposed at the rearward end on the outside of the casing, said adhesive layers serving as attachment means for the napkin inside the panty.
Application of the sanitary napkin takes place in the following manner. The napkin is placed inside a partially pulled down panty which is then pulled up. If the napkin is properly positioned, which is easily ascertained when the panty is put on, the laterally projecting flaps 4, 5 are folded around the edge of the panty and the adhesive layers 6, 7 are affixed to the outside of the panty. In case of backward or sideward misplacement of the napkin, readjustment can be accomplished with the aid of the side flaps which are accessible from without. If however the napkin is initially placed too far up front in the panty and has to be pulled backwards, the panty must be loosened to permit such rearrangement.
It should be understood that after some time the wearer will learn to avoid placement of the napkin so that the front end has to be moved downwards, and therefore readjustments requiring loosening of the panty will be rarely occurring incidents. The inventive napkin is thus simpler to fit into position than prior art sanitary napkins.
There is no need to provide the rear end of the napkin with any adhesive layer. In many cases a friction liner could suffice as a safeguard against displacement of the rear end of the napkin in relation to the panty. Moreover, by replacing the rear adhesive layer of the napkin with a friction liner, readjustment of the napkin in the panty is facilitated.
In order to further stabilize the position of the napkin in the panty, elastic members such as elastic threads, for example, may be disposed longitudinally along the side edges of the flaps which would reduce to a high degree the risk of the absorbent body moving sidewards relative to the panty and away from its initial position. To achieve this performance, the rear end of the napkin should be provided with an adhesive layer 8 serving to prevent the napkin from contraction caused by the force of the elastic members.
According to FIG. 2, wherein like reference numerals refer to the same elements as in FIG. 1, the sanitary napkin differs from the one shown in FIG. 1 in that the side flaps 4, 5 have a shorter extension in their longitudinal direction, creating in this manner folding indications, and in that the napkin of FIG. 2 also includes longitudinal and transverse elastic members 9, 10. The transverse elastic members 10 are intended to give the absorbent body a tendency of curving inwards for preventing gap formation between napkin and outer genitals should the panty with its associated napkin be somewhat displaced in relation thereto such as, for example, by squirming in a cinema chair. In other words, the napkin may so to say be spring loaded towards an inwardly bent shape. The transverse elastic members 10 are for this purpose arranged in the surface layer 2 and preferably on the side thereof facing the absorbent body 1.
It has been found advantageous to design a napkin acording to FIG. 1 with only one transverse thread in the proximity of the upper edge of the napkin.
Due to the inventive design including side flaps, the napkin can be folded to form its own hygienic package. The advantage gained is that single, unused napkins can be hygienically brought along in a handbag, for example, enabling simultaniously a used napkin to be folded into a hygienic and discretely disposable item.
FIG. 3 illustrates the method of folding a used napkin according to FIG. 1 into the form of a package. Folding axes are indicated by dash-dotted lines, and folding directions with arrows in the figure. The napkin according to FIG. 1 is thus folded about its center so that the rear end is bent in over the front end to lie flush therewith, the folding direction being such taht the liquid impermeable surface layer 2 is turned outwards (see FIG. 3a). Next, the portions of the side flaps lying beyond the adhesive layers 6, 7 are folded in over the inside of the casing along folding lines extending parallel with the longitudinal direction of an unfolded napkin (see FIG. 3b). Finally, the free casing portions are folded in over the absorbent body along folding axes extending parallel with the longitudinal direction of an unfolded napkin so that the casing edges folded over to lie flush with the outer limit of the adhesive layers will come close together without leaving any gap between the adhesive layers 6 and 7 (FIG. 3c). The napkin thus folded into a package is then sealed with the aid of a foil strip 11 treated with release agent and covering the juxtaposed adhesive layers 6, 7 (FIG. 3d).
The folding process described above may in principle be applied also in connection with packing unused napkins. In order to minimize the requirement of space, these napkins should however be folded into three sections before folding in the flaps.
It should be emphasized in this context that in the manufacture of the inventive napkin, the adhesive layers 6, 7 could suitably be applied after the napkin has reached its finally folded state. The folding procedure could be further simplified by giving the flaps some other configuration, for example by cutting off the triangular flap portions situated beyond the adhesive layers and which are located in FIG. 3b beyond the folding axes.
The methods of folding described above are only given as non-limiting illustrative examples on how to fold a napkin having flaps according the FIG. 1 into a package. Other folding processes could be utilized for example when folding napkins with alternatively shaped flaps.
According to the present invention there is thus achieved a sanitary napkin which is easily fixed in its proper position inside the panty and which permits adjustment of the napkin after the panty is put on. Furthermore, the napkin is held firmly and securely fixed in the panty during use, and finally the side flaps will permit the napkin to be folded into a hygienic single-piece package prior to as well as subsequent to use, the invention thereby eliminating to a high degree the problem of bringing along and disposing of separate napkins.
A plurality of modifications are of course conceivable within the scope of the inventive idea, particularly with regard to the shape of the absorbent body and the casing flaps. The invention should therefore be restricted solely by the contents of the following patent claims.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3970087 *||Dec 30, 1974||Jul 20, 1976||Colgate-Palmolive Company||Hygienic napkin|
|US3973567 *||May 19, 1975||Aug 10, 1976||Personal Products Company||Wrapped sanitary napkins|
|US4285343 *||Oct 16, 1979||Aug 25, 1981||Mcnair Rosetta M||Sanitary napkin|
|US4589876 *||Mar 20, 1984||May 20, 1986||The Procter & Gamble Company||Sanitary napkin|
|US4608047 *||May 28, 1985||Aug 26, 1986||Personal Products Company||Sanitary napkin attachment means|
|US4692163 *||Nov 26, 1985||Sep 8, 1987||Molnlycke Ab||Absorption article such as a diaper or a sanitary napkin, and a method for the manufacture thereof|
|US4735316 *||Nov 26, 1985||Apr 5, 1988||Molnlycke Ab||Package for individual, disposable sanitary articles and a method of manufacturing such a package|
|US4846828 *||Nov 10, 1988||Jul 11, 1989||Steven Mendelsohn||Sanitary napkin with self-contained disposal means|
|US4857066 *||Feb 8, 1988||Aug 15, 1989||Weyerhaeuser Company||Sanitary napkin or like article having an integral carrying/disposal envelope|
|US4897084 *||Jun 30, 1987||Jan 30, 1990||Molnlycke Ab||Disposable liquid-absorbing article|
|US4911701 *||Feb 26, 1988||Mar 27, 1990||Mcneil-Ppc, Inc.||Sanitary napkin having elastic shaping means|
|EP0127103A2 *||May 21, 1984||Dec 5, 1984||Vereinigte Papierwerke AG||Sanitary towel|
|EP0130848A2 *||Jul 5, 1984||Jan 9, 1985||THE PROCTER & GAMBLE COMPANY||Sanitary napkin|
|EP0134086A1 *||Jul 5, 1984||Mar 13, 1985||THE PROCTER & GAMBLE COMPANY||Shaped sanitary napkin with flaps|
|EP0231974A1 *||Jan 29, 1987||Aug 12, 1987||Ancilla B.V.||Disposable napkin|
|GB2143439A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US5088993 *||Nov 21, 1990||Feb 18, 1992||Mcneil-Ppc, Inc.||Sanitary napkin with individual self wrapping means|
|US5259902 *||Sep 4, 1992||Nov 9, 1993||The Procter & Gamble Company||Method for continuously attaching tensioned elastic material to an absorbent article|
|US5295987 *||Dec 14, 1990||Mar 22, 1994||Molnlycke Ab||Absorbent disposable article which is divided into portions extending in the longitudinal direction of the article|
|US5401266 *||Nov 16, 1990||Mar 28, 1995||Molnlycke Ab||Absorbent article|
|US5415649 *||Oct 29, 1991||May 16, 1995||Kao Corporation||Disposable diapers|
|US5449353 *||Oct 1, 1993||Sep 12, 1995||Kao Corporation||Disposable diaper|
|US5486168 *||Dec 13, 1994||Jan 23, 1996||Molnlycke Ab||Incontinence guard for men|
|US5584829 *||Jul 22, 1993||Dec 17, 1996||The Procter & Gamble Company||Absorbent articles having panty covering components that naturally wrap the sides of panties|
|US5611790 *||Jun 7, 1995||Mar 18, 1997||The Procter & Gamble Company||Stretchable absorbent articles|
|US5643245 *||Jul 11, 1995||Jul 1, 1997||The Procter & Gamble Company||Absorbent article having tucked flaps|
|US5658269 *||Jun 6, 1995||Aug 19, 1997||The Procter & Gamble Company||Extensible absorbent articles|
|US5674212 *||Jul 18, 1995||Oct 7, 1997||The Procter & Gamble Company||Extensible absorbent articles|
|US5683373 *||Apr 22, 1996||Nov 4, 1997||Darby; Kamela J.||Sanitary napkin shaped for use with a thong garment|
|US5683375 *||Aug 21, 1996||Nov 4, 1997||The Procter & Gamble Company||Extensible absorbent articles|
|US5702382 *||Jun 6, 1995||Dec 30, 1997||The Procter & Gamble Company||Extensible absorbent articles|
|US5713884 *||Jun 7, 1995||Feb 3, 1998||The Procter & Gamble Company||Stretchable absorbent articles|
|US5713886 *||Nov 1, 1996||Feb 3, 1998||Sturino; David P.||Panty liner|
|US5772648 *||Nov 4, 1996||Jun 30, 1998||The Procter & Gamble Company||Absorbent article having tucked flaps|
|US5785698 *||Dec 20, 1996||Jul 28, 1998||Kimberly-Clark Corporation||Panty shield|
|US5795349 *||Sep 3, 1996||Aug 18, 1998||The Procter & Gamble Company||Absorbent articles having panty covering components that naturally wrap the sides of panties|
|US5800654 *||Jan 10, 1997||Sep 1, 1998||The Procter & Gamble Company||Method of making sanitary napkin having improved flap disposition and means for maintaining the flap therein|
|US5824004 *||Jul 23, 1992||Oct 20, 1998||The Procter & Gamble Company||Stretchable absorbent articles|
|US5885268 *||Dec 18, 1996||Mar 23, 1999||The Procter & Gamble Company||Absorbent structures having decoupled topsheet and topsheet support strip|
|US5891121 *||Jun 22, 1995||Apr 6, 1999||The Procter & Gamble Company||Absorbent articles having undergarment covering components especially suited for folding around the edges of an undergarment|
|US6015934 *||Dec 22, 1997||Jan 18, 2000||Kimberly-Clark Worldwide, Inc.||Individually wrapped absorbent article and method and apparatus for its production|
|US6059764 *||Feb 4, 1997||May 9, 2000||The Procter & Gamble Company||Stretchable absorbent articles|
|US6287288||Jun 13, 1997||Sep 11, 2001||The Procter & Gamble Company||Stretchable absorbent articles|
|US6293932||Apr 9, 1998||Sep 25, 2001||Kimberly-Clark Worldwide, Inc.||Individually wrapped absorbent article which uses a minimum amount of wrapper material|
|US6315766 *||Oct 22, 1996||Nov 13, 2001||Sga Hygiene Products Aktiebolag||Sanitary napkin having improved side leakage protection|
|US6358233 *||Mar 13, 1996||Mar 19, 2002||The Procter & Gamble Company||Arcuate absorbent article with laterally extending flaps having longitudinal stretch|
|US6391011 *||May 8, 1995||May 21, 2002||The Procter & Gamble Company||Sanitary napkin having improved flap disposition and means for maintaining the flaps therein|
|US6436341 *||Jan 16, 2001||Aug 20, 2002||Adroit Medical Systems, Inc.||Packaging system and method for packaging a sterilizable item to be flash sterilized|
|US6443934||Sep 27, 2001||Sep 3, 2002||Tyco Healthcare Retail Services Ag||Efficient thong pantiliner with fold-over attachment means|
|US6475203 *||Apr 26, 2000||Nov 5, 2002||Ilse Rubio||Feminine hygiene pad|
|US6554812 *||Apr 13, 2001||Apr 29, 2003||Sca Hygiene Products Ab||Sanitary napkin|
|US6569139||Jun 22, 2000||May 27, 2003||Kimberly-Clark Worldwide, Inc.||Disposable absorbent underpants for containing body fluid|
|US6630104 *||Nov 16, 1999||Oct 7, 2003||Cardinal Health 200, Inc.||Method for sterilizing an article|
|US6887224 *||Sep 11, 2002||May 3, 2005||Ilse Rubio||Close fitting leakage resistant feminine hygiene pad|
|US7278988||Sep 20, 2001||Oct 9, 2007||Kimberly-Clark Worldwide, Inc.||Dual-use pantiliner|
|US7291136 *||Nov 17, 2000||Nov 6, 2007||Sca Hygiene Products, A.B.||Absorbent article for use in a thong garment, with central adhesive-free zone|
|US8105304||Jul 2, 2009||Jan 31, 2012||Livedo Corporation||Folded disposable pants|
|US8425481 *||Nov 6, 2007||Apr 23, 2013||Sca Hygiene Products Ab||Attachment means for an incontinence protector|
|US8579876 *||Aug 3, 2010||Nov 12, 2013||Kimberly-Clark Worldwide, Inc.||Tucked fastener for improved fastener performance|
|US8632515||Dec 21, 2012||Jan 21, 2014||Kimberly-Clark Worldwide, Inc.||Tucked fastener for improved fastener performance|
|US9375357||Apr 14, 2010||Jun 28, 2016||Sca Hygiene Products Ab||Male incontinence guard|
|US9539153||Oct 9, 2013||Jan 10, 2017||Kimberly-Clark Worldwide, Inc.||Folded disposable absorbent garment and a package of such garments|
|US20010031956 *||Apr 13, 2001||Oct 18, 2001||Sca Hygiene Products Ab||Sanitary napkin|
|US20030083632 *||Sep 11, 2002||May 1, 2003||Ilse Rubio||Close fitting leakage resistant feminine hygiene pad|
|US20030130643 *||Dec 6, 2002||Jul 10, 2003||Solgun Drevik||Absorbent article with improved fit|
|US20060218700 *||Jun 20, 2003||Oct 5, 2006||Livedo Corporation||Folding structure of disposable underpants and disposable underpants|
|US20080132870 *||Dec 5, 2007||Jun 5, 2008||Edith Nelson||Combined disposable panty and sanitary pad undergarment|
|US20090299321 *||Jul 2, 2009||Dec 3, 2009||Livedo Corporation||Folded disposable pants|
|US20100262111 *||Nov 6, 2007||Oct 14, 2010||Sca Hygiene Products Ab||Attachment means for an incontinence protector|
|US20100298803 *||Aug 3, 2010||Nov 25, 2010||Kimberly-Clark Worldwide, Inc.||Tucked fastener for improved fastener performance|
|CN102939062A *||Apr 14, 2010||Feb 20, 2013||Sca卫生用品公司||Male incontinence guard|
|CN102939062B *||Apr 14, 2010||Jun 10, 2015||Sca卫生用品公司||Male incontinence guard|
|EP0928179A1 *||Jul 23, 1997||Jul 14, 1999||THE PROCTER & GAMBLE COMPANY||Absorbent article|
|EP0928179A4 *||Jul 23, 1997||Sep 5, 2001||Procter & Gamble||Absorbent article|
|EP0988846A3 *||Sep 14, 1999||Jan 16, 2002||Uni-Charm Corporation||Disposable diaper|
|EP1213001A2 *||Nov 8, 2001||Jun 12, 2002||SCA Hygiene Products AB||A sanitary napkin provided with a protective layer that functions as a protective wrapper|
|EP1213001A3 *||Nov 8, 2001||Dec 17, 2003||SCA Hygiene Products AB||A sanitary napkin provided with a protective layer that functions as a protective wrapper|
|EP1267783A1 *||Jan 24, 2001||Jan 2, 2003||Georgene E. Rosengrant||Disposal cover for used feminine protection products|
|EP1267783A4 *||Jan 24, 2001||Apr 23, 2003||Georgene E Rosengrant||Disposal cover for used feminine protection products|
|EP1327428A1 *||Dec 18, 2002||Jul 16, 2003||grupo P.I. Mabe, S.A. de C.V.||Sanitary napkin or panty liner for use with a tanga undergarment|
|EP2216003A1 *||Nov 26, 2008||Aug 11, 2010||Daio Paper Corporation||Absorbent article|
|EP2216003A4 *||Nov 26, 2008||Nov 16, 2011||Daio Seishi Kk||Absorbent article|
|WO1996038110A1 *||May 9, 1996||Dec 5, 1996||The Procter & Gamble Company||Sanitary napkin|
|WO1997039711A1 *||Apr 11, 1997||Oct 30, 1997||The Procter & Gamble Company||Adaptable sanitary napkin|
|WO1997039712A1 *||Apr 11, 1997||Oct 30, 1997||The Procter & Gamble Company||Contractible sanitary napkin|
|WO2001052784A1 *||Jan 24, 2001||Jul 26, 2001||Rosengrant Georgene E||Disposal cover for used feminine protection products|
|WO2003026543A2 *||Sep 10, 2002||Apr 3, 2003||Tyco Healthcare Retail Services Ag||Efficient thong pantiliner with fold-over attachment means|
|WO2003026543A3 *||Sep 10, 2002||Dec 4, 2003||Tyco Healthcare Retail Serv Ag||Efficient thong pantiliner with fold-over attachment means|
|WO2010071517A1 *||Dec 18, 2008||Jun 24, 2010||Sca Hygiene Products Ab||Folded male incontinence guard|
|WO2011127972A1 *||Apr 14, 2010||Oct 20, 2011||Sca Hygiene Products Ab||Male incontinence guard|
|U.S. Classification||604/385.25, 604/389, 604/387|
|International Classification||A61F, B65B63/04, A61F13/15, A61F13/60, A61F13/472, A61F13/56|
|Cooperative Classification||A61F13/476, A61F13/551, A61F2013/8402, A61F13/5514|
|European Classification||A61F13/551B2B, A61F13/476|
|Jun 2, 1989||AS||Assignment|
Owner name: MOLNLYCKE AB, SWEDEN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:TERNSTROM, MAJ I.;HANSSON, ROY;REEL/FRAME:005089/0423
Effective date: 19890519
|Mar 14, 1995||REMI||Maintenance fee reminder mailed|
|Aug 6, 1995||LAPS||Lapse for failure to pay maintenance fees|
|Oct 17, 1995||FP||Expired due to failure to pay maintenance fee|
Effective date: 19950809